Nautiunderwater

Hull & Tank Maintenance

Protection is the foundation
Expert maintenance beneath the surface, engineered for performance and longevity.
Method is the difference
Controlled, data-driven and environmentally conscious processes
Performance is the outcome
Lower drag, reduced fuel consumption, corrosion under control
Antifouling applications completed in the last 10 years
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Superyachts protected through tank coating projects
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Largest yacht serviced for tank protection works
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Largest yacht serviced for antifouling applications
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Hull Treatments & Tank Maintenance

Complete hull & tank protection below the waterline

From antifouling and surface preparation to advanced tank treatments and corrosion control, we deliver end-to-end underwater maintenance that enhances performance, improves efficiency and extends the vessel’s lifecycle.

MORE ABOUT HULL SERVICES
MORE ABOUT TANK SERVICES

Hull Treatments

Advanced surface preparation and protective hull coatings

Running Gear & Propulsion Care

Specialised treatments for propellers, shafts and stabilisers

Tank Treatments & Corrosion Control

preparation and coating for all tank types

Tank Plan – Planned Anticorrosion Management

Structured inspections and long-term corrosion prevention

Technician performing underwater hull inspection and surface quality control with testing tools

QUALITY

Engineered for durability

From surface preparation to coating application, every step is executed under verified conditions and technical inspections to ensure correct adhesion, corrosion resistance and long-term structural protection.

PROCESS CONTROL

Verified procedures ensuring consistency at every stage

TECHNICAL INSPECTIONS

Specialist checks guaranteeing correct preparation and application

CONTROLLED CONDITIONS

Humidity, cleanliness and surface parameters monitored throughout

LONG-TERM PERFORMANCE

Correct adhesion and corrosion resistance for durable protection

nauti standards quality logo
gold refit company logo

ISO Certified Company

MORE ABOUT HULL QUALITY
MORE ABOUT TANKS QUALITY

HOW WE WORK

Transparent, Technical, and Performance-Driven Process

From the first assessment to the final inspection, our underwater work follows a clear and structured methodology. Every project begins with a detailed evaluation of the hull or tank, continues with defined preparation and application steps, and concludes with verified checks to ensure protection, efficiency and reliable performance.

Hull Work

Condition Assessment

Surface Preparation

Cleaning & Substrate Control

Protective System Application

Intermediate Technical Checks

Final Review & Release

Tank Work

Initial Condition Inspection

Technical & Financial Reporting

DETAILED ACTION PLAN STEPS

CONTROLLED EXECUTION PROCESS

Follow-ups & Warranty Controls

SPECIALISED EQUIPMENT

Technician performing sandblasting on a superyacht hull inside a covered shipyard with scaffolding and protective equipment

High-Performance equipment for faster and safer operations.

Faster execution, safer operations and controlled environmental impact across hull and tank projects.

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The real difference is made below the waterline

CEO

Some of our projects

see all projects

OPERATING AREAS

UNDERWATER OPERATIONS. ANYWHERE.

Active across Europe & the Mediterranean

NautiUnderwater operates from Palma and across key shipyards, ports and operational locations throughout Europe and the Mediterranean. Our specialised underwater teams work both afloat and in dry dock, deploying dedicated equipment and controlled procedures to ensure safe, efficient and compliant execution. Wherever the vessel is located, we deliver consistent technical standards, reliable performance and seamless coordination with shipyards, captains and technical teams.
Palma | Vilanova | Barcelona | Sagunto | Denia | Alicante
mobile teams across the mediterranean
outline europe map

MB92 BARCELONA


Location: Barcelona
Size: 30.000m2

PENDENNIS VILANOVA


Location: Vilanova
Size:30.000m2
Travel lift: 62OT

STP MALLORCA & ASTILLEROS DE MALLORCA


Location: Mallorca
Size: 160.000m2 (STP)
Size: 150.000m2 (Astilleros)
Travel lift: 1000t

PORT TARRACO


Location: Tarragona
Size: 15.500m2
Travel lift: 300T

VARADERO SAGUNTO


Location: Sagunto
Size: 226.000m2
Travel lift: 1000t

VARADERO VALENCIA


Location: Valencia
Size: 28.000m2
Travel lift: 300T

NAVANTIA


Location: Cartagena
Size: 3.000m2
Travel lift: 30t

NAVANTIA CÁDIZ


Location: San Fernando
Size: 1.500.000m2

FREIRE


Location: Vigo
Size: 42.000m2

PENDENNIS FALMOUTH


Location: Falmouth
Size: 56.000m2
Travel lift: 800t

BALTIC


Location: Finland
Size: 20.000m2

ATOLLVIC PONTEVEDRA


Location: PONTEVEDRA
Size: 14.000m2

IMS


Location: Toulon
Size: 77.000m2
Travel lift: 670t

SUD MARINE


Location: Marseille
Size: 20.000m2
Travel lift: 40t

MB92 LA CIOTAT & MONACO MARINE


Location: La Ciotat
Size: 124.000m2 (MB92)
Size: 45.000m2 (Monaco Marine)
Travel lift: 300t

LUSBEN LIVORNO


Location: Livorno
Size: 125.000m2 
Travel lift: 300t

TANKOA YACHTS Location: Genova Size: 20.000m2

SIMBAD YACHT

Location: Alicante

PORT DENIA SUPERYACHT MARINA & SHIPYARD


Location: Denia
Size: 50.000m2
Travel lift: 620t

Chandlery Locations

Completed Refit Project Locations

VOICES FROM THE INDUSTRY

Some testimonials from captains & industry professionals

The goal was achieved and the work was completed to the highest of standards – this can only be attributed to the excellent planning with, management, hard work and integrity of all the staff from the top down, in the Nautipaints company. They understand that above all it is the owner and vessels schedule that is the most important aspect and as such they will do anything with in their means to see these expectations met.
Neil Lynall
Neil LynallCaptain of M/Y Sanora
I wanted you to congratulate Juan Galmes and the entire team… they’ve done an incredible job…
Javier Sanso
Javier SansoCaptain of S/Y Windrose
The results achieved were impressive, bordering on spectacular. The team of painters, managers, and office staff are very professional and easy to work with.
David Linebaugh
David LinebaughCaptain of M/Y Lioness V
All the Nautipaints team from the owner of the company down genuinely seemed to take pride in their work and strove to give us the best service they could, and to give the best finish possible.
Stephen Moon
Stephen MoonCaptain of S/Y Anakena
From the start to the finish we were very satisfied with the management and organisation of the project, long hours were consistently worked by the same personal to ensure the very labour intensive project was completed on time.
Charlie Haselden / David Mcgregor
Charlie Haselden / David McgregorCaptains of M/Y Lady Georgina
Nautipaints adherence to an agreed schedule was excellent, every time they worked on board. They were always accommodating, and never held up or interrupted other aspects of our annual maintenance work.
Alexander Greenson
Alexander GreensonCaptain of M/Y Panthera
Although the project became more complicated than we expected, the work went very well and finished on schedule. Your team did a great job of keeping the job moving and with their care and control, we finished with a great paint job.
Bill Bailey
Bill BaileyCaptain of S/Y Lady B
We are very happy with the process and proud of the final result. The communication and coordination with the captain and the rest of the crew has been excellent and smooth.
Ronin M/Y
We are very happy indeed with the paint job especially on the topsides. We think its one of the best paint jobs we have seen! can’t wait to be able to show the owner.
Tobias Brand
Tobias BrandCaptain of S/Y Lionheart
Wrede consulting were employed on behalf of MY Sanora to oversee the critical stages of the painting process and at no time was the surveyor concerned with the practises of the Nautipaints team and often stated that he was very happy with their work.
Neil Lynall
Neil LynallCaptain of M/Y Sanora
I wanted to congratulate you on the work done on the stern tubes of MY Talisman Maiton. The result was outstanding, and both the end client and the Belzona inspector were very satisfied.
M/Y Talisman Maiton
We’re very pleased with the final outcome and appreciate the extra efforts that have been taken to achieve this finish.
James Butters
James ButtersCaptain of M/Y Project Mab
No matter the adversity Nautipaints committed to their schedule after project quotations.
James Turner
James TurnerCaptain of S/Y Aquarius
Of all the contractors aboard the vessel your company stood out as the most professional but above all your employees were the most fun to work with, which we noticed and really appreciated.
Barry de Kock
Barry de KockCaptain of S/Y Bolero
Thank you for an excellent run refit you did an outstanding job. The best project manager I have had the pleasure to work with.
Captain of S/Y Bristolian
Nothing was a problem for them and when needed to keep within the schedule laid out they supplied extra staff and worked overtime.
Wayne Palmer
Wayne PalmerCaptain of S/Y Aphrodite
The level of dedication at Nautipaints unparalleled in our experience and it shows very step of the way, from the excellent attitude of long time employees to the stellar results they produce.
Jonathan Allen
Jonathan AllenCaptain of S/Y Juliet
The goal was achieved and the work was completed to the highest of standards this can only be attributed to the excellent planning with management, hard work and integrity of all the staff from the top down in the Nautipaints company.
Samuel Watts
Samuel WattsCaptain of S/Y Surama
Although the project became more complicated than we expected, the work went very well and finished on schedule. Your team did a great job of keeping all the jobs moving and with their care and control, we finished with a great paint job.
Bill Bailey
Bill BaileyCaptain of S/Y Lady B
Calm and professional throughout you were a pleasure to deal with. We really had such a great experience with Nautipaints.
Barry Cross
Barry CrossCaptain of Cyan Yacht
The works just been completed, have been done to a very high standard, with exceptional professionalism and timeliness, yet again!
Benjamin Rushton
Benjamin RushtonCaptain of M/Y Globas
The paint work has been meticulously prepared to produce an excellent finish, with a high attention to detail, and protection.
M.V. Findings
M.V. FindingsCaptain of S. MacGillivray
The best metric for a company is not merely the end result but the means by which it is achieved, and in our case it was an arduous task. However, like alchemists, Toni and team worked tirelessly to turn our proverbial lead can of worms into a pot of gold.
Jonathan Allen
Jonathan AllenCaptain of S/Y Juliet
Nautipaints delivered a very high standard of work and were professional to deal with throughout the project. The work was well managed, with clear procedures and consistent quality control at every stage, supported by regular updates and transparent communication. An independent paint surveyor described the rig as one of the best paint jobs he had seen, which speaks volumes about the quality of Nautipaints’ workmanship.
Tom Brewer
Tom BrewerCaptain of S/Y Nikata
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